<template>
  <div>
    <li>
      <label>
        <!-- 不推荐这中写法，因为是主动修改props，虽然可以使用，因为Vue只会检测浅层次的数据发生改变，深层次不会监视 -->
        <!-- <input
          type="checkbox"
          v-model="todo.done"
        /> -->
        <input
          type="checkbox"
          :checked="todo.done"
          @change="handleCheck(todo.id)"
        />
        <span>{{todo.title}}</span>
      </label>
      <button
        class="btn btn-danger"
        @click="handleDelete(todo.id)"
      >删除</button>
    </li>
  </div>
</template>

<script>
export default {
  name: "Item",
  props: ["todo", "checkTodos", "deleteTodos"],
  data() {
    return {};
  },
  methods: {
    handleCheck(id) {
      this.checkTodos(id);
    },
    handleDelete(id) {
      if (confirm("确定删除吗？")) {
        this.deleteTodos(id);
      }
    },
  },
};
</script>

<style scoped>
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

li:hover {
  background-color: #ddd;
}

li:hover button {
  display: block;
}
</style>